[PATCH 0/4] usb: typec: add CIX Type-C PD controller driver

[Gary Yang <gary.yang@cixtech.com>]

This series adds a Type-C PD controller driver for CIX platforms and
enables it on the Radxa Orion O6.

The first supported controller is the Realtek RTS5453H, a stand-alone
port controller: the CC and USB Power Delivery state machines run in
its firmware and are configured through vendor registers rather than
the TCPC register interface, so it cannot be driven by the tcpm
framework. The driver translates the controller status registers into
Type-C class notifications and drives the platform PHY's orientation
switch and mode mux.

The driver is named after the CIX platform integration rather than the
RTS5453H so that further register-compatible PD controllers can be
supported without renaming it.

Patch 1 adds the devicetree binding, patch 2 adds the driver and its
MAINTAINERS entry, patch 3 fixes the I2C bus #address-cells/#size-cells
on Sky1 so that child devices can be described on the buses, and patch 4
adds the two controllers and the I2C1 pinmux to the Orion O6 board.

Orientation switching and USB/DisplayPort lane muxing are performed
by the platform combo PHY. That PHY driver is not upstream yet, so
the DTS does not link the connector to it in this series; the ports
are still registered and their state is reported through the Type-C
class.

Tested on a Radxa Orion O6 (Sky1): attach/detach, USB-only and DP-only
alt modes, cable orientation detection and HPD reporting all work.

Gary Yang (4):
  dt-bindings: usb: add Realtek RTS5453H Type-C port controller
  usb: typec: add CIX Type-C PD controller driver
  arm64: dts: cix: fix I2C bus address and size cells on Sky1
  arm64: dts: cix: add RTS5453 PD controllers to Orion O6

 .../bindings/usb/realtek,rts5453h.yaml        | 126 +++
 MAINTAINERS                                   |   7 +
 arch/arm64/boot/dts/cix/sky1-orion-o6.dts     |  51 ++
 arch/arm64/boot/dts/cix/sky1.dtsi             |  16 +
 drivers/usb/typec/Kconfig                     |  11 +
 drivers/usb/typec/Makefile                    |   1 +
 drivers/usb/typec/cix_pd.c                    | 777 ++++++++++++++++++
 7 files changed, 989 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/usb/realtek,rts5453h.yaml
 create mode 100644 drivers/usb/typec/cix_pd.c


base-commit: 6628e7d4c6b25c8d18f1345e3a20d21829aae7e4
-- 
2.50.1